title: Experimental challenge model with low pathogenic H7N1 avian influenza virus to assess protection against infection by these viruses.
mesh_terms: D000818:Animals; D002645:Chickens; D003001:Cloning, Molecular; D004279:DNA, Viral / Q000276:immunology; D009980:Influenza A virus / Q000276:immunology / Q000472:pathogenicity*; D007252:Influenza Vaccines / Q000494:pharmacology*; D005585:Influenza in Birds / Q000276:immunology* / Q000517:prevention & control; D019444:Vaccines, DNA / Q000494:pharmacology*
chemical_list: D004279:DNA, Viral; D007252:Influenza Vaccines; D019444:Vaccines, DNA